LH521028A データシートの表示（PDF） - Sharp Electronics
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LH521028A Datasheet PDF : 15 Pages
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CMOS 64K × 18 Static RAM
LH521028A
TRUTH TABLE
ADDRESS
E
SH SL ALE G
Don’t Care H X X H X
Valid
L L HHL
Valid
LHLHL
Valid
LL LHL
Valid
L L LHH
Don’t Care L L L L L
Valid
L L HHX
Valid
LHLHX
Valid
L L LHX
Valid
L HHHX
Don’t Care L L L L X
NOTE:
X = Don’t Care, L = LOW, H = HIGH
PIN DESCRIPTIONS
PIN
SIGNAL
PIN
1
VSS
14
2
VCC
15
3
SL
16
4
SH
17
5
E
18
6
A0
19
7
A1
20
8
DQ9
21
9
DQ10
22
10
VCC
23
11
VSS
24
12
DQ11
25
13
DQ12
26
SIGNAL
DQ13
DQ14
VSS
VCC
DQ15
DQ16
DQ17
A2
A3
A4
A5
A6
A7
W
DQ0-DQ8
DQ9-DQ17
MODE
ICC
X High-Z
High-Z
Standby
ISB
H Active
High-Z
Read
ICC1
H High-Z
Active
Read
ICC1
H Active
Active
Read
ICC1
H High-Z
High-Z
Read
ICC1
H Data Out Data Out Read
ICC1
L Data In
Don’t Care Write, low byte ICC1
L Don’t Care Data In
Write, high byte ICC1
L Data In
Data In
Write, both bytes ICC1
L Don’t Care Don’t Care Write, inhibited ICC1
L Data In
Data In
Write, both bytes ICC1
PIN
SIGNAL
27
VSS
28
VCC
29
A8
30
A9
31
A10
32
A11
33
A12
34
DQ0
35
DQ1
36
VCC
37
VSS
38
DQ2
39
DQ3
PIN
SIGNAL
40
DQ4
41
DQ5
42
VSS
43
VCC
44
DQ6
45
DQ7
46
DQ8
47
A13
48
A14
49
A15
50
G
51
ALE
52
W
3
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